http://dbpedia.org/resource/William_E._Mayer__Tenure__2 <http://www.ontologydesignpatterns.org/ont/dul/DUL.owl#TimeInterval> dbpedia-owl:office xsd:string Assistant Secretary of Defense for Health Affairs rdf:type <http://www.ontologydesignpatterns.org/ont/dul/DUL.owl#TimeInterval> dbpedia-owl:TimePeriod dbpedia-owl:Tenure dbpedia-owl:president <http://dbpedia.org/resource/Ronald_Reagan> data from the linked data cloud